@book { BausteinedesFiqh,
    title = "Bausteine des «Fiqh»",
    author = "Wolfgang Johann {Bauer}",
    year = "2014",
    publisher = "Peter Lang Verlag",
    address = "Berlin, Germany",
    doi = "10.3726/978-3-653-03125-6",
    url = "https://www.peterlang.com/document/1046611"
}